Questions and Answers
What is external respiration?
Gas exchange between lungs and blood.
What happens to the diaphragm during inspiration?
Contracts and drops/flattens.
What occurs to volume during inspiration?
Increases (filling up).
Which pressure drops in respiration?
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What is the sternum commonly referred to as?
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What happens to the sternum and rib cages during inspiration?
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The _____ is the most important inspiratory muscle.
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What does Boyle's Law state?
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What is the term for lung collapse?
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What is the condition where air is present in the pleura?
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Pneumothorax is associated with ______, while pleural effusion is associated with _____.
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Study Notes
Respiratory Terms and Definitions
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External respiration refers to the gas exchange process occurring between the lungs and blood, essential for oxygen intake and carbon dioxide removal.
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Diaphragm in inspiration: The diaphragm contracts and flattens, playing a critical role in expanding the thoracic cavity during inhalation.
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Volume changes during inspiration involve an increase as the lungs fill with air, effectively enhancing the lung capacity.
Pressure Dynamics
- Intrapulmonary pressure is the pressure within the lung that decreases during respiration, aiding in the inflow of air.
Anatomical Structures
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The sternum, known as the chest bone, provides structural support and protection for the thoracic cavity.
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During inspiration, the sternum and rib cage rise up and outward, which further aids the expansion of the thoracic cavity to accommodate incoming air.
Key Muscles and Laws
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The diaphragm is identified as the most important muscle for inspiration, crucial for effective air intake.
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Boyle's Law: Expressed as P1V1 = P2V2, explains the relationship between pressure and volume in gases, which is fundamental in understanding respiratory mechanics.
Conditions Related to Respiration
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Atelectasis refers to lung collapse, a condition that can inhibit normal breathing and gas exchange.
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Pneumothorax is characterized by the presence of air in the pleural cavity, which can lead to lung collapse and impaired respiration.
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Atelectasis is often associated with pneumothorax, while pleural effusion is linked to pleurisy, highlighting different respiratory complications.
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Description
Explore key concepts of respiration with these flashcards that cover essential terms related to inspiration and expiration. Learn about gas exchange, diaphragm function, and respiratory pressures. Perfect for students looking to reinforce their understanding of respiratory physiology.
